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Patent
G - Physics
01
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265/7
G01G 19/40 (2006.01) G01G 15/00 (2006.01) G01G 19/42 (2006.01) G01G 23/16 (2006.01)
Patent
CA 1238659
FLOATING TARE ADJUSTMENT FOR CONTINUOUS CONVEYOR WEIGHING SYSTEMS Abstract of the Disclosure A conveyor (10) conveys stacks of newspapers to a weigh station (A). The weigh station produces a digital weight signal which is processed by an electric circuit (B) to determine whether each bundle contains preselected number of newspapers. A display (F) provides an indication whether or not the weighed bundle contains the preselected number of newspapers. More specifically, the electronic circuit includes a microprocessor (22) which is programmed to store a preselected number of acceptable bundle weights in a tare calculation memory (72). An algorithm implementing routine (78) averages the stored weights to determine an average weight or tare. A subtraction circuit or routine (52) subtractively combines the tare and the measured weight. A divider circuit or routine (56') divides the tare by twice the number of newspapers which are to be in each bundle to determine the weight of half a paper. A comparing circuit or routine (54) compares the weight difference signal with the weight of half an article to determine whether or not each measured bundle contains the proper number of papers. If the bundle contains the proper number of papers, the measured bundle weight replaces the least recently stored weight in the tare calculation memory and a new tare is determined. In this manner, the tare is readjusted after every acceptable bundle is weighed such that the tare is a function only of the weight of precedingly accepted bundles and may fluctuate widely with variations in the density of ink, paper, and the like.
485885
Hall Systems Inc.
Ridout & Maybee Llp
LandOfFree
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